Loom for the manufacture of knotted carpets.



Patented D'c. I6, I902.

H: PANITS CHEK &. J. AHORN. LODM FOR THE MANUFACTURE OF KNOTTED GABPETS.

(Application filed Jan. 27, 1902.)

7 Sheets-$heet I.

(No Model.)

Nu. 7l6,092. Patented Dec. l6, I902.

H. PANITSCHEK &. J. AHURN. LOUM ,FOR THE MANUFACTUREDF KNOTTED CABPETS (Application filed Jan. 27, 1902.) (No Model.)

7 Shaets$haet 2.

m: NbkRlS nurzns 20.. PHOTO-LITHQ, mswwnow. D c.

Patented Dec. l6, I902.

H. PANITSCHEK & .1. AHO RN. 1.00M Fm? THE MANUFACTURE OF KNOTTED CABPETS.

(Application filed Jan. 27, 1902.

(nu-mum.)

7 Sheets-Sheet 3 THE NORRIS PzTzRs cu, PnoTo-u'md" msumsron. m g.

No. 7l6,092. Patented Dec. l6; I902.

H. PANITSCHEK J. AHORN. LOOM FOR THE MANUFACTURE OF KNOTTED GARPETS.

(Application filed Jam 27, 1902.) (Nu Medal.) M 7 Sheets-Sheet 4.

No. 7l6,092. Patented Dec. "5,1902. n. PANITSCHEK & .1. AHORN.- LODM FOR THE MANUFACTURE OF KNUTTED CABPETS.

(Application filed Jan. 27,1902.) (No Model.) 7 Sheets-Shel 5.

No. 7l6,092. Patented 060.16, I902.

H. PANITSCHEK & J. AHORN. LOOM FOR THE MANUFACTURE OF KNOTTED CABPETS.

- (Application filed Jan. 27, 1902.) (No Model.)

uaQ mmez. Patented mqw, |902 H. PANITSCHEK &. J. Arman. 1 r LOOM FOR THE MANUFACTURE 0F KNUTTED CABPETS.

(Application filed Jan. 27, 1902. (No Modal.) 1 Sheets$heet 7.

Nrrn terns AT-slur F FIGEo HEINRICH PAN ITSCI-IEK AND J OHANN AHORN, OF BARN, AUSTRIA- HUNGARY.

Loom FOR THE MANUFACTURE OF KNOTTED CARPETS.

SPECIFICATION forming part of Letters Patent No. 716,092, dated December 16, 1902,

Application filed January 27, 1902. Serial No. 91,450. No model.

To all whom it may concern:

Be it known that We,HEINRIOH PANITSCHEK I and JOHANN AHORN, subjects of the Emperor of Austria'I-Iungary, residing at Barn, in the Provinceof Moravia, in the Empire of Austria-Hungary, have invented certain new and useful Improvements in Looms for the Mannfacture of Knotted Carpets; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to a loom for manufacturing knotted carpets either with knots ofthe typeoharacteristic of Persian carpets or with knots of that characteristic of Smyrna carpets by meansof the same knotting apparatus without its being necessary to change any parts thereof should the loom be required for knotting carpets of one kind after having been used for making carpets of the other kind. In both a Persian knot and a Smyrna knotthe piece of thread that forms the pile case of a Persian knot the piece of thread surrounds the other warp-thread only to the extent of one-half, (see Figure A of the accompanying drawings,) and in the case of a Smyrnaknot, (Fig. 13,) itsurrounds this warpthread also completely. A method of forming such pile fabrics isdescribed in application, Serial No. 91,451, filed January 27, 1902. From this it will be seen that in making both a Persian knot and a Smyrna knot the ends of the piece of thread for the knot must be crossed around one of the two warpthreads. This crossing is effected by a pair of tongs, which consists of two slotted axiallymovable parts, of which one is inserted into the other and which areadapted to hold the piece of thread at two places, so that when a complete pair of knotting-tongs.

grees. For the purpose of enabling knots of either kind to be formed by means of the same knotting apparatus, as desired, there is mounted on each of the pairs of knottingtongs, which are arranged parallel to one another, a sleeve which takes part in the rotary movement thereof, but is not axially movable, and is provided on its outer edge with two diametrically opposite hooks, which dur- 6o ing the rotation of the sleeve grip the warpthread first moved backward or raised and bend it into the form of an S, so that, as will be described in the following, by suitably fixing the initial position or the amount of the rotary movement to be imparted to the sleeve Persian or Smyrna knots can be formed, as desired.

Figs. 1 and 2 of the accompanying drawings show, respectively in elevation and in plan, essential parts of a weaving and knotting loom constructed according to this in vention, several parts beingshown in section and only three pairs of tongs being shown in Fig. 2. Fig. 3 shows in elevation and plan a device arranged on the upper part of the frame for enabling the warp-threads to yield in the direction of their length. Figs. 4 and 5 are respectively a top and a bottomplan of Fig. 6 shows in elevation means for opening the row of warp-threads. Fig. 7 showsworking parts of the knotting and weaving loomin the positions occupied by them when the pairs of tongs are in their lowest position, but not in the initial position required for making one or the other kind of knots. Figs. 8 to 17, inclusive, show working parts of the weaving and knotting loom in the operation of making Persian knots. Figs. 18 to 26, inclusive, show working parts of the loom in the operation of. making Smyrna knots. Fig. 27 shows two warp-threads and a finished Smyrna knot thereon.

Each pair of tongs for gripping a piece of thread to be knotted and for crossing its ends around one of the warp-threads comprises an outer cylindrical part 1 and aplunger 2, that can he slid axially therein. The two parts 1 and 2 'are provided with straight axial slots3 and 4:- The cylinder 1 is provided near. its free forward end with an open slot a, which forms a hook I), that points backward. The forward end of the plunger 2 has an angular notch c for the purpose of gripping securely, in combination with the hook I), the piece of thread which is inserted into the recess a in the manner to be hereinafter described and enabling the piece of thread to be properly held in the middle by the pair of tongs. The pairs of tongs are preferably carried in an inclined position, Fig. 1, by a support 5, which is mounted on a carriage 7, that can be moved up and down along a vertical controlling-shaft 6. The support 5 is moved to and fro across the looms by means of forked guides j for the purpose of enabling the pairs of tongs to be moved after each knotting of a piece of thread by the distance apart of a pair of warp-threads. This horizontal movement of the pairs of tongs is effected step by step by the controlling-shaft 6, whose step-bystep movement causes that of the support 5 by means of a chain 8. The step-by-step movement of the controlling-shaft 6 is produced by means of a ratchet device of known kind. The up-and-down motion of the support 5, and consequently that of the carriage 7, is effected by rods 9, that are connected by articulations with the support 5 and are operated in a known manner by means of cams from the main shaft of the loom. In consequence of the articulations between the rods and the support the transverse motion of the latter is not interfered with, since the rods can swing transversely to the loom.

Each of the pairs of knotting-tongs is inserted into a tube 10, Fig. 1, which is rotatably mounted on the support 5 and is provided with a driving-key 11, which passes through the straight correspondingly wide and backwardly-directed slot 3 4 in the pair of tongs. On the tube 10 there is seen red, by means of screws, a toothed wheel 12, which effects the rotation of the pair of tongs which is driven by the key 11 when the tube 10 is rotated. The key prevents at the same time a movement of the cylinder '1 in relation to the plunger 2. The movement of the parts of the pairs of tongs in a longitudinal direction is effected by means of the following apparatus: On the support there is mounted a horizontal auxiliary shaft 13, on which on each side of the loom there are keyed two pairs of cams 15. These eccentrics, which are not shown in Fig. 1, but two pairs of which are shown in Fig. 2, act on sliding rollers 16 of slotted levers 17, whose oscillatory motion by means of shafts 18 oscillates levers 19, that move, by means of links 20, sleeves 22, mounted on longitudinal rods 21, and also transverse rods 23, that are connected to the sleeves 22, thereby moving the parts of the pairs of tongs, the cylinders 1, and theplungers 2, which are adjustably secured in the transverse rodsjoy means of nuts, in the direction of their length. The cams 15 are so shaped that the movements of the pairs of tongs that are hereinafter referred to and are necessary in the knotting operation (the closing and opening of the pairs of tongs and the simultaneous movement of the two parts of each of the pairs of tongs when they are open or closed) are obtained. The arrangement of the slotted levers each with two bearingrollers enables the time of the occurrence of these movements to be altered, as desired, by adjusting the cams on the auxiliary shaft 13. The driving of the auxiliary shaft 13 is effected by bevel-wheels 24: from a vertical shaft 25, which is mounted in the support 5 and in which there is inserted a universal joint 26, which enables the motion to be transmitted without interfering with the to-andfro movement of the support. The shaft 25 is driven in a known manner from the main shaft.

The rotary movement of the pairs of tongs is efiected by a common rack 14, which engages with all the toothed wheels 12 and the movement of which is likewise effected by the auxiliary shaft 13. For this purpose there is mounted on the shaft 13 a cam 27, (shown only in Fig. 2,) which acts on a bearing-roller carried by an arc-shaped lever 28, that is adapted to oscillate about a shaft 18, which oscillates, by means of a chain 30 led around a pulley29, an arc-shaped lever 31, and through this lever, by means of a chain 32, the rack 14.

Each of the bands 33, containing the pieces of thread, consists of two parallel longitudinal threads, between which the pieces of thread to be knotted are held at certain distances apart, so that they can be easily drawn out. The succession of colors made by these pieces of thread corresponds to the pattern of the carpet to be produced. These bands are guided downwardly approximately at right angles to the pairs of knotting-tongs along arms 34, that are pivoted to the frame of the machine, and each of the two warp-threads of each hand 33 passes around a pulley d on a weighted lever 6, so that the bands are normally held stretched and the insertion into the notches a of the cylinder 1 of the pieces of thread intended for knotting is insured. The warp-threads after having been stripped of the pieces of thread are guided by the pulleys cl to a device for tightening and winding up the warp-threads.

The tightening of the bands is effected automatically by the weighted levers c after each drawing out of a piece of thread, whereupon the levers e are raised by means of a bar f, which is arranged underneath them, is common to them, and can oscillate about the axis of a shaft to, so that the warp-threads which have thus been made slack can be drawn tight and wound up by the said device. The shaft to, that carries the barf, has attached to it an arm n, which is operated by the main shaft at certain times by means of a rod 4E0 (indicated in Figs. 1, 2, and 7 by dotted lines) and other known parts.

Each piece of thread that is to be knotted is placed on two slightly-springy forks g g,

IIO

. pieces of thread in question.

Figs. 1, 2, and 7, arranged at a distance apart corresponding to the distance apart of the warp-threads and is supported thereby. The following piece of thread is held sufficiently by two slightly-projecting pieces h, that are inclined toward each other and extend through the opening in the band between the two These projections constitute a support for the band, so that when the piece of thread to be knotted is drawn out the warp-threads are not drawn backward. i

The two forks g g and the projections 71. h are mounted on a carrier '5, Figs. 1 and 7, which is attached to the under side of a bar 35, Figs. 1, 2, and 6, which iscarried by the arms 34 and can be slid in the direction of the width of the loom. Two bars k, Figs. 1, 2, and 6, are held against this bar 35 by means of bolts Z, which pass. through longitudinal slots m in thebars 70, so that the bars 70 can move to and fro in the direction of their length. The bars k carry at parts opposite to the pairs of knotting-tongs pairs of knifelike sharpened pushers n, which when the arms 34 swing inward pass through the open ings formed by the pairs of displaced or raised warp-threads. The bars 76 are slid in opposite directions after the pairs of pushers have been inserted, so that the row of warp-threads is opened out by the pusher 'n, at both sides of each pair of warp-threads inserted into a pair of knotting-tongs. The corresponding pair of knotting-tongs can be inserted into the opening thus formed until the notch a of the cylinder of the pair of tongs comes under the piece of pattern-thread (i. e., the, piece of thread of the pattern-band) to be knotted.

For the purpose of eifecting the to-and-fro movement of the pushers one of the two rods The movement of thearms 34 and thedis placement of the bar 35 in the direction of its length is effectedin a known manner from the main shaft of the loom.

The described arrangement enables to bring the pieces of pattern-threads to be knottedilnmediatelyfrom the pal tern-band into the knotting-tongs, whereby the feeding apparatus generally employed until now for the said purpose is dispensed with and, besides, the knotting operation is efiected in a perfectly sure and automatic manner.

In the following description that part of the weaving andknotting loom is described which enables Persian or Smyrna knots to be formed by means of the same knotting apparatus without its being necessary to change The second any portion of the same when it is desired to pass from one kind of knots to the other.

On the outer end of each of the tubes through which the pairs of tongs 1 2 extend there is placed a sleeve 36, which is rigidly connected to this tube by the key 11, so that it must rotate therewith, but cannot move axially. The sleeve 36 has at its end a thicker portion 39, of which the inner edge forms a single screw-thread. The outer free edge of the thicker portion is provided with two gripping-hooks 37 and 38, which are opposite to each other and of which the hook 37, located atthe middle of the screw-thread, projects farther (in the direction of the length of the sleeve) than the other hook 38, which is at the outer end of the screw-thread. The openings in the hooks have inclined acting edges, which are indicated in Figs. 4 and 5 by dotted lines. These inclined edges are parallel, but they act in opposite directions on the warpthread gripped by the hooks when the sleeve is rotated, since the warp-thread is in front of the inclined edge of the book 37, but behind the inclined edge of the hook 38, as will be seenfrom Figs. 4 and 5. If this sleeve is placed in such an initial position that the notch a in the corresponding pair of tongs faces upward after three-quarters of a revolution of the sleeve and the pair of tongs, the pair of tongs can engage with the band for the purpose of drawing out a piece of thread, and thereby forming a Persian knot. On the other hand, if the initial position of the sleeve is such that the notch CL of the pair of tongs faces upward only after one and a quarter revolutions a Smyrna knot is formed. This will be hereinafter explained in detail, and the mode of operation of the weaving and knotting loom in forming Persian and Smyrna knots will be described in detail with reference, respectively, to Figs. 8 to 17, inclusive,

and to Figs. 18 to 27, inclusive.

1. The formation of a Persian knot-First.

All the parts are in the positions shown in Fig. 7, the carriage 7 and the support 5 are in their lowest positions, and the pair of tongs in question is withdrawn into the sleeve. The pair of tongs and the sleeve are turned backward through ninety degrees intthe diward and moves idly first through ninetydegrees until the books 37 and 38 bend the first warp-thread in two places, as shown in Fig. 10. When the pair of tongs has been rotated through one hundred and eighty degrees, Fig.

Second. The support, together.

The pair of tongs is then turned for- 10, the second warp-thread is raised and placed against the edge of the sleeve, so that after a further rotation of the pair of tongs through ninety degrees the first warp-thread is bent to the form of an S and the second warp-thread is engaged by the hooks, but is still straight, as shown in Figs. 11 and 12. As one of the warp-threads must always be slackened in the direction of its length, so as to enable the S -shaped loop or twist to be formed, it is passed at the top over a rounded bar u, Fig. 3, which extends beyond the width of the fabric and is carried by arms 8 of a shaft t and partly around the latter. The shaft t is connected by means of an arm with a rod g, which is released at a certain moment by an ordinary cam and is held by a weak spring 00, so that the thread can be drawn forward to the extent necessary for forming the before-mentioned twist. The pair of tongs has, therefore, after three-quarters of a revolution, as is necessary in this case, come into such a position that its notch a is at the top. Third. The pair of tongs is now moved forward, so that the parts of the two warp-threads located between the hooks enter the slots 3 4 of the tongs. Thereupon the support is raised one centimeter, whereby the piece of pattern-thread to be knotted is caused to enter the notch ct, as shown in Fig. 13. The entire preliminary fabric is then moved somewhat outwardly by swinging the arms 34, so that the piece of thread to be knotted enters the curved portion or concavity of the hook I), as is indicated by dotted lines in Fig. 13. Fourth. The plunger 2 of the pair of tongs is moved forward a short distance, so that the pair of tongs is closed and the piece of thread is gripped in the middle and held securely by the pair of tongs. Fifth. The pair of tongs then returns closed, so as to draw the piece of thread out of the patternband, Fig. 14. During the return of the tongs the plunger 2 moves somewhat outwardly,

Fig. 1 5, and then returns immediately, so that the piece of thread forms the loop required for the knot, as shown in Fig. 16. The pair of tongs now passes back through the beforementioned opening in the row of warp-threads until it arrives behind the latter. By rotating the sleeve slightly backward the second and later-raised warp-thread is released from the hook. If it is now let go, it enters, as required, into the still-open loop formed by the piece of thread. Sixth. The support, with the still-unfinished knot, then moves downward, and the pair of tongs, which in the meantime has been withdrawn behind the edge of the sleeve for the purpose of enabling the crossing of the piece of pattern-thread around the second warp-thread and of the winding backward or uncoiling of the S- shaped loop formed by the first warp-thread, is rotated backward through one hundred and eighty degrees, Fig. 17, just in front of the finished work, so that the ends of the piece of pattern-thread are crossed around the second warp-thread and the before-mentioned S twist or coil of the first warp-thread is undone or taken out. Thereupon the pair of tongs, including the plunger, is again moved forward to the row of warp-threads, and the Persian knot thus completed is drawn close down to the finished fabric. The pair of tongs is then again opened by the backward movement of the plunger, whereby the finished knot is released. The pair of tongs 1 2 'is now moved backward again and withdrawn must be rotated backward through ninety degrees.

II. The formation of a Smyrna 7m0t. I

or backward through about two hundred and seventy degrees from the position shown in Fig. 7. Whereas formerly-t'. e., in forming the Persian knotthe hook 37 was on' the right-hand side, Fig. 9, it is now located on the left-hand side, as is indicated by dotted lines in Fig. 18. The pair of tongs is completely withdrawn, as in the previous case, so that its free forward end lies within the sleeve. After the support has been raised in the manner hereinbefore described the first warp-thread is raised-i. e., drawn back-and occupies a position at right angles to the axis of the pair of tongs in consequence of the inclined position of the latter. The first warp-thread raised then bears against the unnotched edge of the thicker portion of the sleeve. Second. The sleeve is rotated through about ninety degrees forwardt'. 6., in the direction indicated by the arrow in Fig. 18so that the two hooks grip the warp-thread. In this case the aforesaid acting inclined edges of the openings in the hook cause a slight bending of the warpthread at two places in the direction of the length of the pair of tongs, as will be seen from the side elevation included in Fig. 18, and the upper part of the warp-thread is moved forward or outward in relation to the lower part of the warp-thread. Third. The sleeve moves farther in the direction indicated by the arrow. This causes the warpthread to be bent, as shown in Fig. 19. During the further movement of the sleeve the lower portion of the warp-thread is compelled to wind or coil upon the smooth portion of the sleeve by the thicker edge of the sleeve, which begins at the lower hook 38 or the opening therein and is wound in the form of a screw-thread, whereas the upper portion of the warp-thread, which is moved somewhat forward by the inclined edge of the hook 37, can pass the front surface of the sleeve, as shown in Fig. 20. Fourth. The hook 37 has passed beyond its lowest position and the other hook 38 beyond its highest position. The upper portion of the warp-thread has slid away from the hook 37, so as to form a closed loop around the other book 38, as

first warp-thread which is required for the formation of the Smyrna knot, but is not permaii nent, is now formed. Sixth. Thereupon the pair of tongs is moved forward, so that the warp-thread which crosses the opening in the sleeve enters the slot in the pair of tongs. At the same time the second warp-thread is raisedand also enters the slot in the tongs, Fig. 23.. seventhoThereupon the same operations occur as in the case of the formapattern-thread, the formation of the loop of the piece of thread, and the releasing of the second warp-thread, which enters the open loop of the piece of pattern-thread, Fig. 24.

Eighth. The pair of tongs is drawn back until its freeend, which contains the piece of thread, is behind the edge of the sleeve. Ninth. Thereupon the pair of tongs, and consequently the sleeves, is rotated backward through one hundred and eighty degrees, so that the ends of the piece of pattern-thread are crossed and the temporary loop of the Warp-thread surrounds only one part of the pair of tongs, Fig. 25. the sleeve through somewhat more than the said one hundred and eighty degrees, the pair of tongs being simultaneously pushed forward to the row of warp-threads, the loop of the warp-thread falls from the sleeve, and thus reaches one of the crossed ends of the piece of pattern-thread, Fig. 26, whereupon the pair of tongs is again rotated backward somewhat more than one hundred and eighty do grees, so that the finished'knot can be pushed into the'proper position on the finished fab- .ric. Eleventh. By the tension in the warp the loop of. the warp-thread is undone, and a like loop is consequently formed in the cori responding end of the piece of pattern-thread,

Fig. 27, completing the Smyrna knot, which can be pushed down to the fabric, whereupon by opening the pair of tongs the finished knot can be released. Twelfth. The support with the pair ofitongs moves upward and is then moved transversely by. the distance apart of two warp-threads or of a pair of warp-threads. it Now in order to form a new Smyrna knot the pair. of tongs must, as hereinbefore stated, he brought into the initial position required By comparing Figs. 11 and 22 it will be seen Tenth. By rotating that in producinga Smyrna knot a' somewhatlonger piece of one warp-thread is wound on the periphery of the sleeve than in the case of a Persian knot, so that the latter requires less slackening of the warpthread. i The aforesaid cam for the slackening or letting-off device, which is driven from the main shaft, releases the rod y, Fig. 3, at the proper moment; but the rod is held by the spring 00 in such a way that the warp-thread does not become slack. During the succeeding rotation of the pair of tongs and the sleeve-2'. e. when the warp-thread is wound on the sleevethe spring 00 yields to the pull of the warp-thread by an amount equal to the amount of warpthread wound upon the sleeve, whether aPersion or a Smyrna knot is being made.

When the weaving and knotting loom has to be adjusted for making knots of another kindfor example, Persian knots after being used for making Smyrna knots-the cam 27,

which effects the rotation of the pairs of tongs and the sleeves and moves the rack 14, is adjusted only so as to change its acting camsurface. The construction of such an adjustable cam is known.

We claim 1. In a loom, in combination with warp mechanism and means for positioning and feeding strips of pattern fabric cut in-the direction of its warp; of knotting mechanism,

meansto move said mechanism. to the warpthreads to engage pairs of them and to and from the pattern fabric to seize short weftthreads thereof, and means to actuate the knotting mechanism, whereby said short threads will be knotted around respective warp-threads.

2. In a loom, in combination with warp mechanism and means for positioning and feeding a pattern fabric cut in the direction of its warp into strips; of knotting mechanism, means to move said mechanism to the warp-threads to engage pairs of them and to and from the strips of pattern fabric, means to actuate the knotting mechanism, whereby said short threads will be knottedaround pairs of warp-threads and a change device to cause the knotting mechanism to knot either a Persian or a Smyrna knot, substantially as described.

3. In a loom, knotting mechanism comprising a sleeve having warp-engaging hooks thereon, a cylinder therein having forked ends, a plunger in the cylinder also having forked ends, and means to simultaneously rotate the parts, and devices to reciprocate the plunger and cylinder within the sleeve, substantially as described.

4. In a loom, knotting mechanism comprising a sleeve having warp-engaging hooks thereon and means to rotate said sleeve, a cylinder having forked'ends in saidsleeve, a plunger also having forked ends in the cylin- =der,*both cylinder and plunger independently movable axially, and a key passing through the sleeve and the forks of said cylinder and plunger, whereby said parts are simultaneously rotated, substantially as described.

5. In a loom, knotting mechanism comprising a sleeve having Warp-engaging hooks on its end and means to rotate the sleeve, a cylinder having forked ends, and pile-threadengaging hooks thereon and axially movable in the cylinder, and a key passing through the sleeve and forks of said plunger and cylinder, whereby the parts are simultaneously rotated, substantially as described.

6. In a loom, knotting mechanism comprising a sleeve, two oppositely-situated warpengaging hooks and a single screw-thread on its end, said hooks of different form, a cylinder having a forked end in the sleeve and pile-thread-engaging hooks on the forks, a forked plunger in the cylinder having pilethread-holding notches in its end, and a key passing through the sleeve and the forked end of the cylinder and plunger, to simultaneously rotate the parts, and means to independently move the cylinder and plunger axially, substantially as described.

7. In a 100m, in combination with warp mechanism and means to position and feed strips of pattern fabric; of knotting mechanism, means to shed pairs of warp-threads to the knotting mechanism and means inserted into the warp at the points where pairs of warp-threads have been shed to laterally open the warp, mechanism to move the knotting mechanism through the opened warp to engage short weft-threads of the pattern fabric to withdraw them therefrom and knot them to the warp-threads engaged by the knotting mechanism, substantially as described.

8. In a loom, in combination with warp mechanism and means to position and feed strips of pattern fabric, and means to shed pairs of warp-threads; of sleeves having Warp engaging hooks on their ends and a cooperating forked cylinder and forked plunger in each sleeve, means to slacken warp-threads engaged by the hooks to wind them upon said sleeves on one side of the warp, pushers opposite each sleeve and a cooperating cylinder and plunger, on the other side of the warp to enter the spaces left by the shed warp-threads to laterally open the warp, mechanism to move the cylinders and plungers through the opened warp to seize short weft-threads from the strips of pattern fabric to knot them around shed warp-threads, substantially as described.

9. In a loom, the combination with knotting-forks and warp mechanism; of means to carry and feed strips of a pattern fabric, and means to successively move them across the warp behind successive pairs of warp-threads, forks to embrace warp-threads of the pattern fabric and means to prevent the drawing of said warp-threads during the removal of a short weft-thread, and tension-rollers for said pattern fabric, warp-threads and means to periodically release the tension thereon, substantially as described.

10. In a loom, the combination with knotting-forks andwarp mechanism; of means to carry and downwardly feed strips of a pattern fabric, and means to successively move them across the warp behind successive pairs of warp-threads, spring-forks to embrace warpthreads of the strips of pattern fabric below the point of withdrawal of the short weftthreads therefrom, and projections h above said spring forks to take between warpthreads of the pattern fabric to prevent their drawing during the removal of the short weftthreads therefrom, tension-rollers for the pattern-fabric warp-threads, weighted levers in which the rollers are journaled and a barf to simultaneously and periodicallylift thelevers to remove tension on the pattern-fabric warpthreads, substantially as described.

11. In a loom, knotting mechanism comprising a sleeve having warp-engaging hooks on its end, a cylinder therein having forked ends and pil'e-thread-engaging hooks thereon, a forked plunger in the cylinder, means to connect said parts to permit their independent reciprocation and simultaneous rotation, a pinion on the sleeve, cam-operated levers to independently reciprocate the cylinder and plunger within the sleeve, a rack engaging the pinion and a change device to reciprocate the rack'to rotate the knotting mechanism, whereby either a Persian or a Smyrna knot may be made, substantially as described.

12. In a loom,a carriage, knotting mechanism thereon comprising sleeves having warp-engaging hooks thereon, hook-ended, forked cylinders therein and forked plungers in the cylinders, a bar connecting all the cylinders and one connecting all the plungers, cam-operated mechanism to reciprocate the bars to actuate the cylinders and plungers, and means to move the carriage transversely of the loom to operate on successive pairs of warp-threads, substantially as described.

13. In a loom, a carriage, knotting mechanism thereon to seize and knot properly-fed pile-threads around pairs of Warp-threads, a driven auxiliary shaft and a second shaft on the carriage, cams on said auxiliary shaft and cooperating levers on the second shaft, said levers operating knotting mechanism, all vertically, laterally and transversely movable with the carriage, substantially as described.

M. In a loom, a carriage, knotting mechanism thereon comprising sleeves having warp-engaging hooks thereon, a hook-ended, forked cylinder in each sleeve, aforked plunger in each cylinder, a pinion to revolve each sleeve and means to cause the simultaneous rotation of the cooperating cylinder and plunger, and a rack to simultaneously rotate all the sleeves; a driven auxiliary shaft and a second shaft on the carriage, cams on the auxiliary shaft and cooperating levers on the second shaft, one of said levers adapted to communicate motion to a change-arc to operate the means to rotate the knotting mechanism and the others to impart reciprocating motion to the cylinders and plungers, substantially as described.

15. In a loom, a carriage, knotting mechanism thereon comprising sleeves having Warp-engaging hooks thereon, a hook-ended, forked cylinder in each sleeve, aforked plunger in each cylinder, a pinion to revolve each sleeve, a key through the sleeve and parts therein, and. a rack to simultaneously rotate all the sleeves and their contained parts; a driven auxiliary shaft and a second shaft on the carriage, a cam on the auxiliary shaft, a 1

HEINRICH PANITSOHEK. JOHANN AHORN.

Witnesses:

J OSEF R BUsoH, ALVESTO S. HOGUE. 

